/*
*  Copyright WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
*  WSO2 Inc. licenses this file to you under the Apache License,
*  Version 2.0 (the "License"); you may not use this file except
*  in compliance with the License.
*  You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.wso2.carbon.core.caching;

import java.io.Serializable;

import net.sf.jsr107cache.CacheException;

import org.apache.axis2.clustering.ClusteringAgent;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.caching.core.CacheInvalidator;
import org.wso2.carbon.core.internal.CarbonCoreDataHolder;

/**
 * The OSGi service to do cache invalidation
 */
public class CacheInvalidationService implements CacheInvalidator {
	
	protected CarbonCoreDataHolder dataHolder = CarbonCoreDataHolder.getInstance();
	
	private static Log log = LogFactory.getLog(CacheInvalidationService.class);
	
	public void invalidateCache(String cacheName, Serializable key) throws CacheException{
	    try {
			ConfigurationContext configContext = dataHolder.getMainServerConfigContext();
            if(configContext != null && configContext.getAxisConfiguration() != null){
                ClusteringAgent agent = configContext.getAxisConfiguration().getClusteringAgent();
                if (agent != null) {
                    InvalidateCacheEntryMessage msg = new InvalidateCacheEntryMessage(cacheName, key);
                    agent.sendMessage(msg, true);
                }
            }
		} catch (Exception e) {
		    log.error("Failed sending cluster invalidation" + e.getMessage(), e);
		    throw new CacheException("Failed sending cluster invalidation" + e.getMessage(), e);
		}
	}

}
